Power reverse mechanism for locomotives



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June 9, 1925. 1,540,870 I H. K.l ADAMS POWER REVERSE `NmcHAmsn/I FOR LocoMoTIvEs Fileiuay-la 1921 l -4 sheets-Sheet 1 31a/nudo@ 4 sheets-Sheet H. K. ADAMS POWER REVERSE MECHANISM FOR LOCOMOTIVES Filed May 19 1921 Ivune 9, 1925.

June 9, 1.925. 1,540,870

, H. K. ADAMS V POWERREVERS MECHANISM FOR I OCOMOT:[VESA Filed May 19, 1921 4 sheets-sheet s Q) N w 3 Ilmmuulluuun ,l Q \\.y//

y @WA HenrgEda/ms,

June 9, 1925.

' H. K. ADAMS POWER REVERSE MECHANISM FOR LocoraoTIyEs Filed May 19, 19.21 4 sheets-sheet 4` N v F atented June 9, 1925.

HENRY IK. ADAMS, NASHVILLE, TENNESSEE.

rownn nnynnsn MncHaNrsM ron LocoMoTIvEs.

application filed May i9,

To all 'whom t may (formera:

.Beitknown that I, HENRY K. ADAMS, a citizen of the 'United States, residing at Nashville, in the county of Davidson and "5' State of Tennessee, have invented certain new and useful Improvements-in Power Reverse Mechanisms for Locomotives; and do hereby declare the followingto be a full,-

clear7 and exact description of the invention, r

l@ such as will enable others skilled in the art to which it appertains 'to make and use the same;Vv l

This invention relates to power reverse mechanisms for locomotives, and has for its object to provide a device ofthis character which willbe simple in construction, coinparati-vely inexpensive to manufacture, and more ecient inaction than those heretofore proposed. With these and other objects in view, the `invention consists in the novel details of construction and combinations of parts more fully hereinafter disclosed and particularly pointed out in the claims. f' Referring to the accompanyingdrawings forming a part of this specification, inwhich likenumerals designate like parts'in all th views-r Fi ure l is a diagrammatic side elevagtiona view4 of a portion of the locomotive illustrating the present invention applied thereto;

Fi Y ure 2 is a fragmentary sectional elevation: view or' the' worm and sector conncc tions illustrated in Figure 1;

Figure 3 is a transverse vertical sectional view taken approxin'iatcly on tlieline 3-3 of Figure 2, looking in the direction of the arrows;

- Figure d is an enlarged elevational view,

partially broken away, of the power unit, together with its transmission and automatic control mechanism, shown in Figure 1;

Figure 5 is an end elevational view of the "parte shownin Figure l as seen from the .left out said iigur'e;

Figure d is an enlarged sectional eleva tional ew taken approximately on the line y --wii nl' igure el, looking in the direction of' the arrows;

.liigure i' a view similar to Figure (i,

1921. serial m. 470,999.

taken on the line 7`-7 of Figure 4, hackingy in the direction of the arrows.

FigurefS is a cross-section ofthe auxiliary rotary engine showing the rotary piston and blades; and

Figure 9 is a vier.T taken on the line 9-9 of Figure, with the piston and blades re moved.

1 indicates a-locomotive provided with aV boiler 2, driving wheels 3, cylinder 4, and steam chest 5. The engine is provided with the usual valve gear of any vpreferred type, such, for example, as the VValscheart gear, having a link 6 pivoted asat 7 and adapted to be voscillated about the said pivot by means of the connecting rod 8, which receives its motion from the driving wheels 3.

Associated with the-said link 6 in the usual manner is the radius rod 9 adapted to /be raised and lowered with respect to the said'link by means of the bell crank lever 1() and connection 1l in the well known n1anner. l

The said bell crankil() may be pivoted upon the stub shaft 12 in the usual manner, audits arm 13 instead of being connected in the usual manner to the manually controlled reciprocating reverse rod is provided at its upper end with a gear sector 14 rigidly fastenedto the said arm 13. llfeshingwith the teeth of the said sector 14 is a Worm 15,'see

Figures 2 and 3, which. worm is mounted upon the longitudinally extending powery shaft 10 and may be enclosed in a suitable housing 17, as will be clear from the drawings. The mechanism )ust described 1s located in the usual position near the forward end oit' the boiler and the shaft 16 'extends back along the said* boiler to the cab, not shown, with which the engine may be provided. Secured to the boiler casing within the said cab as by the bracket 20 is a power unit of any suitable type here Idiagrammatically illustrated asa rotary engine 21.

Saidrotary engine, as best shown in Figure fr, may be provided with a shaft 22 carrying spur 23 meshing with the gear loosely mounted upon the shaftl. Said gear 241 may be provided with the hub 25 i having clutch teeth 26 adapted to coact with i the ccrnpanen teeth il? in a campamenclutch member 28 which latter member may be splined to the said shaft 16. The said member 28 may be moved longitudinally of the said shaft in any desired manner, as, for example, by the clutch rod 30 provided at its end with thev knob or other gripping means 31', all as Willbe clear trom Figure 4.

The said shaft 16 may extend through the clutch members 25 and 28 and may carry upon its extreme end the hand Wheel 31 provided with the pivotedhandle 32 adapted'to be swung outwardly at right angles to the rim of the said Wheel, should it be4 desired to manipulate the gear manually,`all as will appear more fully below. Also mounted upon the said sha-ft 16 adjacent the hand Wheel 31 is a disk 33 provided with a plurality of notches 34 with which a pivoted spring controlled dog 35 is adapted to engage to lock the parts in any desired position.

The engine 21 may be provided with an inlet steam pipe 36 and with the eirliaust pipe 37, see Figures 4, 5, 8 and 9, and the .flow of fluid to the said engine from the inlet pipe 36 may be controlled by means of a suitable valve 40.

This said valve may be provided `with a valve stem 41 upon which is mounted the handle 42, whereby lthe said valve may be manually opera-ted to control the llow ot fluid whereby the engine 21 may be driven Y in either direction, or stopped, at Will.

g to

That is to say,l steam being` admitted through the pipe 36, and the valve being in the proper position, steam Will pass through the channel 400 into the annular passage 401, and out through the set of orts 402 into the rotor chamber 403 behint the rotor elements 404, and will pass out of said chamber through the set ot ports 405 into,y

channel 40? into the valve cavity 408 and thence into the exhaust passage' 409, and pipe 37. As no claim is made herein to this auxiliary rotary engine as a separate invention, further details thereof are not deemed necessary. But it will be clear that when the valve 40 is so set as to cause steam to pass down the channel 401, the rotor 404 will turnin one direction, While if the valve 40 is so set as to admit steam into the channel 407, and ports 405, said rotor willturn in an opposite direction and the engine 21 will be reversed.

In order to protect the parts against damage which might result should the engine 21 be inadvertently permitted to run a longer period than is necessary to effect the complete movement of the valve gear to reverse the locomotive, an automatic control is associated with the valve .40, as Will now be disclosed. Mounted upon the shaft 16 in termediate the gear 24 and the hand Wheel 31' is aspur pinion 45 which meshes with nasceva engine 21, as at 52, is a lever 53 having the bent end or extension 54 ,v ro'ectinf through a suitable opening in the housing 55 surrounding the gear train 46, 43, and 49, v

and lying in the path of the cam member 51..

The valve handle 42 mounted upon the valve stem 41 is provided with the singularly e;1.i'

tending arms 58 which are connected as by the pivoted link 59 to the lever member 53, as Will be clear from the said iigures. lt

thus results 'that should the lever- 53 he moved in either direction by the cam 51, as Will presently appear, the motion will be transmitted through the link 59 'to the arms 58 of the valve handle 42 and. to valve stem 41 and valve 40, whereb the ,flow of fluid pressure from the supp y pipe ,36 to the engine may be cut olii.

60 represents a suitable indicator rigidly secured to the gear 49 by means o'i a pin 6l passing through the slot 62 in the housing 55, see Figure (i, and the said indicator cooperates with r, scale 63 carried by the hous-` to indicate the position of the linlt y ing block inv the iinlr and the pointat which the valve gear cuts on?, and likewise the position of the valve gear or the locomotive. For instance, it the pointer is set at 25 the steam is cut ott at 25% ot the piston stroke.

indicates a slip joint or connection in vthe shaft 1G adapted to take care of the the annular chamber 40G and through the'l expansion and contraction of the boiler.

The operation of the invention will he clear from the foregoing, but may be brie-fly summarized as follows:

Supposing the parts to be in the positions illustrated in Figure 1, wherein the radius loo bar 9 is at substantially mid portion of the link 6, so that no motion Will be transmitted by a movement of the link and that it be desired to run the locomotive ahead, the clul :h members 25 and 28 being engaged by means of their manual control 31, the locking le er 65 is moved to the right as seen in Figurel 4, thereby disengaging the dog 35 from i 1e notch 34 in the locking dislr 33, Where` 3y rotation of the. shaft 16 will be permitt Id. The valve handle 42 is next movedin "'ne proper direction to admit fluid pressure to the rotary engine 21 to move the latter in he proper direction to raise or lower the radius bar 9. Motion from the rotor of the engine 21 will be transmitted to the Shalt 22 to the gear 23 mounted thereon to the gear-1,24, clutch member 25, clutch 28, to shaft 16,

. or tl voi" the notcl relatively to the worm 15, sector 14, bell crank 1 .3 and link connection il to the radius bar Q .f'thus raising or .lowering theJ same from its neutralI position at the center of link 6 toany 4desired position above or below the said oenter. he exact position of the radius bar, of course, will depend upon the lengfth of time the engine 2l is permitted to rotate, and this in turn will be controlled by the i conditions obtaining time. `When the radius bar 9 has been moved a suitable distance, the valve lever 42 may he manually returned to its center position yas illustrated 4in Figure 4, thereby cutting ofi the flow of il he engine 2l and lstopping all motion. The looking` lover may then be returned to its Vpositionshown in Figure l with thev toe 35 engaging in one es 34 in the locking disk' 33, as will be rea lily apparent.

' Shouldtheengineer inadvertentl cut oli' the how of Steam. to the the automatic control mechanism above disclosed will accomplish this and prevent any damage to the'various parts which mightresult from their continued operati is to say, so long as tl eration and gear 45-Figu which in turn is rotating t gear 49., and cam member 5i.

y omit to engine 231 4e, he pinion 48, ln view of the high speed oi a rotary steam englue this gear ratio is preferably quite largo, say for example, twelve revolutions of shaft i6 to one of the cam 5I.. lll/hen theoam 5l is moved through a predetermined arc of a circle and corresponding to the movement which has been imparted to the radius bar 9, the raised portion -66 thereof will Contact with the bent extension :il of the lever 5- see Figures 4 andand will move the same downwardly. which motion will be 'imparted through the link connection 59 and angular arms 58 to the lever'llQ. valve steml 4l. and valve 40 to automatically cut of? the steam supply. It thus results il engine be ined-vorteil! he automati determined been reache wat shoul ly cally cut oil d the rotarv left running. it will when a certain preosition of the radius bar 9 has ,and injury to the various parts 1e 4apparatus prevented. 1e cam member 51 is so designed that it will operate the vlever 53 when moved in either direction so that no matter in which irection. the rotary .engine is movingF the automatic control will he eieotve.- The par sit-ion of the parts may be readily dioat'ed to the engineer upon the scale with which the control mechanism provided. Should he desired for any reason operate the .locomotive reversing mechanism manually instead of throur'h. .the power means :for eaamp e should th illustrate vinch.

comprising a Q toscani; withV said e engine 2T break down, the clutch members 25 and26 may be disengaged through the manually controlled clutch rod 30, whereupon the shaftlti may be operated by means hand wheel 31 carried thereby and prec1sely the same movements of th may be had as was in operation.-

By moving the shaft 16 onl p a time, as indicated u on the locking ldisk 33, it is possible by tie construction here d to obtain an adjustment of ,the radius rod as .tine as, say, one tenth of an y one notch at i It will. thus be seen that I have provided a simple,feloient power means for actuating t e reversing mechanism for a engine, which means m trolled' through the m handle 42 and `which is provided automatic control device throughv is impossible for the engineer to i mechanical parts by" carelessness vertence in permittin undue length of vtim the valve with the which itl edium of or inad g the motor to run 'an e. It will also be seen that means are provided whereby the power mechanism may he disengaged and if condiiions require it, the manually, as at present.

It is obvious that those may vary the details of co as the arran skilled in the art nstruction as Well. gement ofparts ingr from the spirit of th therefore I do not wish to be limited tothe. above disclosures except as may be required by the claims.

lWliat ll cla-im is:

l. ln Aa power reverse steam engines provided geen, thecombination of com ally with a. link valve said lever extension tocontrol said manually operated means; sai source of power whereby the latter may be shifted; and a manually operated clutch governing said connections, substantially as described.

2. In a `power reverse, vlmechanism .for steam engi-nes gear, the combination of a source of power:

rotary motor; means forv controllint;F said source 'of power: a lever linked to said means and with an extension; connections het source of power and said valve gear whereby the latter may be shifted; a clutch .ing said connections; and automatic comprising; a gear wenn said means train and a cam adapted levere tension to ac'tnae sani, operated means to out od saidhandoperated e radius bar was the case when the engine .i

locomotivel ay be manually convalve gear shifted l without departl e invention, and l mechanism :for i provided L I power' comprising a rotary motor; hand operated means for controlling said source of power; a lever linked to said means and provided with an extension; connections comprising a worm and sector between said source of power and said valve gear whereby the latter may be shifted; a, clutch governing said connections; automatic `means comprising a gear train and a'cam adapted to coaet withsaid lever extension to' actuate saidhand operated means to cut oli said power when said valve gear has been shifted a predetermined amount; and independent means', associated with said connections whereby said valve gear may be manually shifted, substantially as described.

4. In a power reverse mechanism forsteam engines provided with a link valve gear, the combination 'of a source o f power comprising a rotary reversible steam motor;

4manually operated means for controlling y said source of power; connections comprising a worm and sector between said source of power and said valve gear, whereby the latter may be shifted; a clutch governing said connections; automatic means comprising a gear train, a cam, and a lever coacting with said cam adapted to actuate said controlling means to cut ot said power when said gear has been shifted a predetermined amount; independent means associated with said connections whereby said valve gear may be manually shifted; and mea-ns for locking'thejparts in any desired position, substantially as described.

5. In a power reverse mechanism for steam engines provided with a link valve gear, the combination of a reversible rotary -uid pressure motor; a shaft driven by said motor: a `clutch governing the operation of said shaft: connectionsf'including a worm y and sectorbetween said shaft and valve gear for shifting the latter; hand operated means comprising a lever and a rotary valve for controlling the admission of liuid pres` lsure to said motor;- and automatic means operation thereof; connections including a worm and sector between said shaft and valve gear for shitting the latter; manually operated means-tor controllingfthe admission oft fluid pressure to said motor; and automatic means comprising a cam driven by' said shaft and a pivoted lever operated by said cam adapted to actuate said manually operated means to cut 0H said fluid pressure when said gear has been shifted a predetermined amount, substantially as described.

7. In a power reverse mechanism for lsteam engines provided with a link valve gear, the combination of a fluid pressure motor; a shaft driven by said motor; a clutch to govern the operation of said shaft; connections between said shaft and valve gear for shifting the latter: means for controlling the admission of. duid pressure to said motor; automatic means comprising a. gear train, a cam, and a lever, and link, adapted to actuate said controlling means to cut oil said fluid pressure when said gear has been shifted a predetermined amount; and means for visibly indicating the position of said valve gear, substantially as described.

8. In a power reverse mechanism, for steam locomotives provided with a link valve gear, the combination of a rotary fluid pressure motor; a rotary shaft, driven'by said motor; a clutch to gove rn` the operation of said shaft; connections between said shaft and valve gear for shifting the latter; manually operated means 'for controlling theadmission of fluid pressure to said motor; a lever linked to said last named means and provided with an extension; automatic means comprisinga gear train, and a cam driven by said shaft adapted to coact with said. lever extension to actua-te said manually operated means to cut ofi said iiuid a predetermined amount: and means c'ontrolled by said gear train for visibly indicat gear, the combination of a rotary Huid pres-- 'sure motor; a rotary' shaft driven by said motor; connections comprising a worm and sector between said shaft and valve gear for shifting the latter; a clutch to govern said connections; a nianially oqperated rotary valve for controlling the admission of fluid pressure to said motor; a lever linked to said valve and provided with an extension; automatic means comprising a gear train and a cam driven by said shaft adaptedto coact with said lever extension to actuate said controlling valve to cut od said fluid pressure when said valve gear has been shifted a pre.- determined amount; means connected to said gear train for visibly imlicating the Ipressure when said gear has been shifted www@ position of said valve gem; and means for ieeking said shaft in :my desired position7 substantially as deseibed.

O. :in a, pewex reverse mechanism for seam iocomotives provided with :i link valve gea?, he een'lbimxton vof a fluid pres sure motor; e, shaft driven by said motor; Qeznecfions comprising a. Worm and .sect-'ir beween said shaft and valve gear for shifting the lattei; a manually operated valve iu controlling the aniission 0i Fluid pressure to said motor; u lever linked to said valve' and provided with an extension; ante` matic. means compmemg e gem' tram md a @am (ii'iven by said shet auizlpied to eoae wih said leve? extension te actu-ate said con1 rolling vaive te cut ofi." said fiud pressure when Said valve lms been Siiiftedn pledefermined mummt: mmm; conneeeci. i1@

f en-i' tziin for visibly indicating; the po- Simm 0i said suive gear; meme fm* cisen.m gag-ing' said meter from :seid shaft; means for 'ianlmily feteting saidsimff;andmeaus fer eeia'ing Suid smf in muy desii'ed position, slfbsi-anialy es described,

in testimony whereof eiiix my sigrmule.

HENRY K. ADAMS. 

